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1620 East Homer Adams Pkwy Alton, IL 62002

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2018 GMC Sierra 3500HD OVERVIEW Overview Icon

2018 GMC Sierra 3500HD in Alton

We engineered the Sierra 3500HD to exceed your performance expectations, pushing it to the limit to deliver the kind of professional grade capability you demand.

Get Current Pricing*
  • Front 40/20/40 Split-Bench Seat
  • Outside Manual-Extending Trailer Mirrors
  • Daytime Running Lamps
  • Assist Handle, Front Passenger and Driver On A-Pillars
  • Rear Vision Camera
2018 GMC Sierra 3500HD Main Img

2018 GMC Sierra 3500HD MODELS

  • Sierra 3500HD

    Sierra 3500HD

  • Sierra 3500HD Dual Rear Wheel

    Sierra 3500HD Dual Rear Wheel

  • Sierra 3500HD SLE

    Sierra 3500HD SLE

  • Sierra 3500HD SLE Dual Rear Wheel

    Sierra 3500HD SLE Dual Rear Wheel

  • Sierra 3500HD SLT

    Sierra 3500HD SLT

  • Sierra 3500HD SLT Dual Rear Wheel

    Sierra 3500HD SLT Dual Rear Wheel

  • Sierra 3500HD Dual Rear Wheel Denali

    Sierra 3500HD Dual Rear Wheel Denali

  • Sierra 3500HD Single Rear Wheel Denali

    Sierra 3500HD Single Rear Wheel Denali

2018 GMC Sierra 3500HD CONFIGURATIONS

* Model and trim configurations may vary
  • Sierra 3500HD Crew Cab Standard Box
    Sierra 3500HD Crew Cab Standard Box
  • Sierra 3500HD Crew Cab Long Box Single Rear Wheel
    Sierra 3500HD Crew Cab Long Box Single Rear Wheel
  • Sierra 3500HD Crew Cab Long Box Dual Rear Wheel
    Sierra 3500HD Crew Cab Long Box Dual Rear Wheel

GMC Sierra 3500HD Dealer in Alton

2018 GMC Sierra 3500HD PERFORMANCE Performance Icon

2018 GMC Sierra 3500HD performance

Vortec® 6.0L V8 SFI Engine

  • 360 hp @ 5400 rpm
  • 380 lb-ft of torque @ 4200 rpm
  • FlexFuel E85-capable
  • Variable Valve Timing (VVT) optimizes high-end power and low-end torque
2018 GMC Sierra 3500HD performance

Capability

  • Maximum Gooseneck/Fifth wheel trailering capacity of 23,300 lbs
  • Maximum payload of 7,153 lbs
  • CornerStep rear bumper
  • Available Gooseneck/Fifth Wheel Prep Package

2018 GMC Sierra 3500HD APPEARANCE Appearance Icon

Outside Vertical Trailering Mirrors 2018 GMC Sierra 3500HD Appearance Main Img
2018 GMC Sierra 3500HD appearance

Outside Vertical Trailering Mirrors

Includes LED Rear Guidance Lamps for backing up (helps to see trailer when backing up with a trailer) and amber auxiliary clearance lamps.

2018 GMC Sierra 3500HD COMFORT Comfort Icon

2018 GMC Sierra 3500HD comfort

Power Door Locks

  • Programmable
  • Lock out protection
  • Allows you to lock and unlock doors easily whether it’s from the driver or front passenger seat or from outside using the key fob
  • Lockout protection helps you avoid locking keys in the vehicle
2018 GMC Sierra 3500HD comfort

3.5” Diagonal Monochromatic Driver Information Center

Provides key vehicle information such as average vehicle speed, fuel range, average fuel economy, tire pressure, oil life, trip odometer and warnings.

2018 GMC Sierra 3500HD comfort

10-Way Power-Adjustable Driver Seat With Power Lumbar

  • Moves the seat forward and back, and up and down
  • Tilt the seat cushion and seatbacks
  • Also includes 4-way power lumbar
2018 GMC Sierra 3500HD comfort

Driver and Front Passenger Heated Seats

At the touch of a button you can warm the cushions and backs with multilevel temperature control.

2018 GMC Sierra 3500HD SAFETY & WARRANTY Safety Icon

PRO GRADE PROTECTION

Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and services including:

- Two maintenance visits
- 3-year / 36,000-mile Bumper-to-Bumper Warranty
- 5-year / 60,000-mile Powertrain Warranty
- 5-year / 60,000-mile Roadside Assistance & Courtesy Transportation
- 3-month trial of OnStar Guidance Plan with a suite of emergency security and diagnostic services
- 5-year OnStar Basic Plan

2018 GMC Sierra 3500HD Safety Main Img
2018 GMC Sierra 3500HD safety

Forward Collision Alert

If the system detects that a front-end collision situation is imminent while following a detected vehicle, the system alerts the driver to a potential crash.

2018 GMC Sierra 3500HD safety

Hill Descent Control

  • Uses antilock braking to help provide a smooth, controlled descent in rough terrain
  • Works without the driver pressing the brake pedal
  • Activates by pushing a button on the instrument panel

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